<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
  <script src="/lib/lib-flexible.0.3.2.js"></script>

  <style>
    html,body{
      margin: 0;
      padding: 0;
    }
    .test{
      width: 10rem;
      height: 200px;
      background-color: #f66;
      margin: auto;
    }
    .test2{
      width: 9rem;
      height: 200px;
      background-color: #ff6;
      margin: auto;
    }
  </style>
</head>
<body>
dfkjerbngiurenbgujkgblijnhbrem;mrem;
<div class="test">10rem 750px</div>
<div class="test2">9rem</div>
</body>
</html>
